교과서 질문
An axenic environment is one that:
a. Exists in the human mouth
b. Contains only one species
c. Exists in the human colon
d. Both a and c
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검증된 단계별 안내
An axenic environment is one that:
a. Exists in the human mouth
b. Contains only one species
c. Exists in the human colon
d. Both a and c
List three conditions that create opportunities for pathogens to become harmful in a human.
Infections that may go unnoticed because of the absence of symptoms are called __________ infections.
In which type of symbiosis do both members benefit from their interaction?
a. Mutualism
b. Parasitism
c. Commensalism
d. Pathogenesis
List four types of symbiotic relationships, and give an example of each.